Two maintenance questions:

1. I have been seeing ads for a product to clear up the outer cover on car headlights. I wondered if it would work to clear up similar hazing of the plexi windows of aircraft. Has anyone tried it, and with what success? Other products that work?

2. What is the best product to use on the paint to protect it, add some shine, and reduce the wind resistance a little? Something short of a repaint.

Thanks.